As you can see from the photo, the sticker are also work in csso with my rng skin pack.
And each weapon had a sticker of Kagiyama Hina as me in the update file,funny but good looking,also shinning and made by myself{sticker}
I'd try to upload the file if enyone is interesting with this.
At last: Stickers!
Stickers are work by model on weapons if there is a model for stickers then you can add any sticker on it.
To hide it you need just post
"no draw" "1"
in your vtm files
So i'm thinking if there will be stickers model in csso in the future.
But here i'm just showing this probability